Controlling means for air-brakes.



"Patnted' Oct. 13, 1908.

INQENTIIR' Gana'spM/knmxt.

G. MACLOSKIE. .QOHTBOLLING MEANS' POR AIR BRAKES.

APPLOATION FILED MAR. 5, 1908.A

` electrically and pneinnatically, such', for in- U'NTTED sTATns. PATENT onirica".

GEORGE nactosinn,

OF SGHENECTADY,I NEW YORK, ASSIGNIOR TO GENERAL ELECTRIC" COMPANY, A CORPORATION OF NEW YORK.

coNTRoLLINe miens ron AIR-BRAKES.

Patented Oct. 18, 190B.

Application led Hatch 5, 1968. i Serial No. 419,284

Schenectady, county of Schenectady, State of New York, have invented certainnew and useful Improvements in Controllingl Means'- for Air-Brakes, of which the ,following is a;

speciiication. y

My invention relates to' the controlling means for braking. systems controlled both stance, as are described in .my prior patents, No. 843,758, dated February 12th 19H7, and No. 869,444, dated October 29, 1907.

Such systems are provided with a motormans valvefor controlling'4 the brakes pneumatically and with switch contacts 'for controlling the brakes electrically.' It is con- 'venient from an operating standpoint to arrange both the valve and the switch contacts so that they areoperated' by a single handle,

vbut with the arrangements heretofore vemit is objectionable from the standpl'oyed, pomt'of maintenance, since when the brakes are being controlled electrically the valve 1s moved back and forth on litsi'seat without performing any useful function and under-v going needless wear-which tends to produce f leakage.

afs i l i i i member For' this reason it has sometimes been preferred heretofore to employ sepa,

rate handles for the valve'and contacts.

The object ofmy invention is to provide vau arrangement4 Wliereby both valve and contacts may be operated lfrom a single handle Without prodilcmg any unnecessary Wear on the valve. I accompdishtlus by so arranging the 4connections between the" handle or operating member-andthe Valve:

as tope-rmit movement of said'handle or to ope/rate the switph contacts withi-v out movement oif the valve. More specifically stated,-I insert in theconnetion between the operating member and the valve mutilated gears so arranged that the valve will remain stationary while the operating member is moved through a 'portion` al: its rance. j

hy inventionwill bestbe understood by reference .to the accompanying. drawings, in which!` f V f 1 n :,f l `igure 1 shows an elevation of controlling dotted line 1-1i`otl4`ig. 2, 'which shows a plan view of the cdiitrollinguineans, with the spindle in' cross-section; andFig. 3 is a c etail view of the muti# lated gears.

In the drawings, A represents the valve for controlling the brakes pnenmatically. This valve, which may be of any suitable construction, is connectedv to and operated by the. spindle B. On this spindle is a mutilated gear C/,which is engagedby a mutilated gear D on a second spindle E. This second spindle is shaped at its' upper end in the 'usual manner, to receive a handle. Carried y ion thespindle- E., and insulated therefrom, :are the movable contacts F, which ooperate with the stationary contact fingers G to control the brakes electrically. i

H represents a blowlout coil for the ,switch-contacts. Y y As is best seen from Fig. 3, the mutilated gear-s are so arranged that the spindle E may' be moved-.through a part of a revolution, to .open and close the switch contacts, without moving the valve, while the movement of the spindle E overA the rest of its revolution brings the teeth of gears D and C into mesh, soas tofrotate the operating spindle B of the valve. lThe gears D and C are provided with bearing snrfacesfas shown in Fig.A 3,. by which the valve is locked in position, except whenV the teeth'of the' two gears are in casing and operatin I do not desire'to limit myself to thevpartionlar construction and4 arrangement, of parts here shown, but aim in the appended claims to cover all modifications which are within the' scope of my invention.

vthat I claim 'as new, and desire to secure by Letters Patent of the United States, is,-

l. Controlling means for braking systems controlled 4both electrically -and pneumatic,- ally,"comprising a valve forscontrolling the brakes ypneulnatie-ally, switch contacts for controlllng thebrakes electrically," a single operating 'member for said valve and said switch contact-s, and. connections between said valve and said member adapted topermit the movement of said memberto o crate said contacts without movement'l ot 'said valve.

2. yControlling means for braking systems controlled both electrically and pneumatically, comprising a valve Jfor controlling `the brakes leumatically, switch contacts for control ing the brakes electrically, a single operating member For .said valve and said I, contacts, and mutilated gears in the connection between said valve and said member,

` wherebysaid member may be moved to operate said contacts without movement of said valve.

- 3. .Controlling means for braking systems controlled both electrically and pneumatically, comprising a valve for controlling the brakes pnenmatically, switch contacts for controlling the brakes electrically, ak single operating member for said valve and said switch contacts, connections between said valve and said member adapted to permit the movement of said member to operate said contacts without movement of said valve, and means for lockmg said valve 1n position except when it is being moved by said ically, comprising a valve for controllingvthe brakes pneumatically, switch contacts for controlling the brakes electrically, a single tion between said valve and said member, whereby said member may be moved to oaperating member for said valve and said contacts, and mutilated gears in the connecoperate said contacts without movement of said valve, said gears having bearing surfaces adapted to lock said valve in position except when the teeth of said gears are 'in mesh. i

5. Controlling means for braking systems controlled both electrically and pneumatically, comprising a valve for controlling the brakes pnematically, an o erating spindle therefor, a second s indle a apted to receive, and to be moved y, a handle, mutilated gears connecting the two s indles, and switch contacts for controlling ie brakes electrically carried by said second spindle.

6. Controlling means for braking systems controlled both electrically and pneumat ically, comprising a valve for controlling the brakes pneumatically, and operating splndle therefor, a second spindle adapted to receive, and to be moved by, a handle, mutilated gears connecting the two indles, and switch contacts for controlling t e brakes electrically carried by said second spindle, said gears havin bearingsurfaces adapted to lock said va ve in position except when the teeth of said gears are in mesh.

In witness whereof I have hereunto set my handthis 3rd day of March 1908.

GEORG-E MACLO SKIE. 

